pimd/pim_igmpv3.h

   1 /*
   2   PIM for Quagga
   3   Copyright (C) 2008  Everton da Silva Marques
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful, but
  11   WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13   General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19
  20 */
  21
  22 #ifndef PIM_IGMPV3_H
  23 #define PIM_IGMPV3_H
  24
  25 #include <zebra.h>
  26 #include "if.h"
  27
  28 #define IGMP_V3_CHECKSUM_OFFSET            (2)
  29 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET    (6)
  30 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
  31 #define IGMP_V3_NUMSOURCES_OFFSET          (10)
  32 #define IGMP_V3_SOURCES_OFFSET             (12)
  33
  34 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE        (1)
  35 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE        (2)
  36 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
  37 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
  38 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES      (5)
  39 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES      (6)
  40
  41 /* GMI: Group Membership Interval */
  42 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
  43
  44 /* OQPI: Other Querier Present Interval */
  45 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
  46
  47 /* SQI: Startup Query Interval */
  48 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
  49
  50 /* LMQT: Last Member Query Time */
  51 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
  52
  53 /* OHPI: Older Host Present Interval */
  54 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
  55
  56 void igmp_group_reset_gmi(struct igmp_group *group);
  57 void igmp_source_reset_gmi(struct igmp_sock *igmp,
  58                            struct igmp_group *group,
  59                            struct igmp_source *source);
  60
  61 void igmp_source_free(struct igmp_source *source);
  62 void igmp_source_delete(struct igmp_source *source);
  63 void igmp_source_delete_expired(struct list *source_list);
  64
  65 void igmpv3_report_isin(struct igmp_sock *igmp, struct in_addr from,
  66                         struct in_addr group_addr,
  67                         int num_sources, struct in_addr *sources);
  68 void igmpv3_report_isex(struct igmp_sock *igmp, struct in_addr from,
  69                         struct in_addr group_addr,
  70                         int num_sources, struct in_addr *sources,
  71                         int from_igmp_v2_report);
  72 void igmpv3_report_toin(struct igmp_sock *igmp, struct in_addr from,
  73                         struct in_addr group_addr,
  74                         int num_sources, struct in_addr *sources);
  75 void igmpv3_report_toex(struct igmp_sock *igmp, struct in_addr from,
  76                         struct in_addr group_addr,
  77                         int num_sources, struct in_addr *sources);
  78 void igmpv3_report_allow(struct igmp_sock *igmp, struct in_addr from,
  79                          struct in_addr group_addr,
  80                          int num_sources, struct in_addr *sources);
  81 void igmpv3_report_block(struct igmp_sock *igmp, struct in_addr from,
  82                          struct in_addr group_addr,
  83                          int num_sources, struct in_addr *sources);
  84
  85 void igmp_group_timer_lower_to_lmqt(struct igmp_group *group);
  86 void igmp_source_timer_lower_to_lmqt(struct igmp_source *source);
  87
  88 struct igmp_source *igmp_find_source_by_addr(struct igmp_group *group,
  89                                              struct in_addr src_addr);
  90
  91 void igmp_v3_send_query (struct igmp_group *group,
  92                          int fd,
  93                          const char *ifname,
  94                          char *query_buf,
  95                          int query_buf_size,
  96                          int num_sources,
  97                          struct in_addr dst_addr,
  98                          struct in_addr group_addr,
  99                          int query_max_response_time_dsec,
 100                          uint8_t s_flag,
 101                          uint8_t querier_robustness_variable,
 102                          uint16_t querier_query_interval);
 103
 104 void igmp_v3_recv_query (struct igmp_sock *igmp, const char *from_str,
 105                          char *igmp_msg);
 106
 107 int igmp_v3_recv_report (struct igmp_sock *igmp,
 108                          struct in_addr from, const char *from_str,
 109                          char *igmp_msg, int igmp_msg_len);
 110
 111 #endif /* PIM_IGMPV3_H */